Rod-line weight,申请号US19310559662-传众专利搜索

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发明名称	Rod-line weight
摘要
申请公布号	US1867574(A)	申请公布日期	1932.07.19
申请号	US19310559662	申请日期	1931.08.27
申请人	THE NATIONAL SUPPLY COMPANY	发明人	LEKAN ARTHUR L.
分类号	E21B19/02	主分类号	E21B19/02
代理机构		代理人
主权项
地址

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